21185285

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{97}}^1$

素因数の和:162

約数の個数: 36

約数和(自身を含む): 29795724

約数和(自身を除く): 8610439

約数列:

[1, 5, 11, 19, 55, 95, 97, 121, 209, 361, 485, 605, 1045, 1067, 1805, 1843, 2299, 3971, 5335, 9215, 11495, 11737, 19855, 20273, 35017, 43681, 58685, 101365, 175085, 218405, 223003, 385187, 1115015, 1925935, 4237057, 21185285]

約数ペア:

[(1, 21185285), (5, 4237057), (11, 1925935), (19, 1115015), (55, 385187), (95, 223003), (97, 218405), (121, 175085), (209, 101365), (361, 58685), (485, 43681), (605, 35017), (1045, 20273), (1067, 19855), (1805, 11737), (1843, 11495), (2299, 9215), (3971, 5335)]